Add chrome side webusb permission UI code

chrome/browser/usb/usb_tab_helper.h

Index: chrome/browser/usb/usb_tab_helper.h
diff --git a/chrome/browser/usb/usb_tab_helper.h b/chrome/browser/usb/usb_tab_helper.h
index d4cc97da01ce2cc5ef53ecf60a5ee907559afc78..83f7c3201fea9864cbab692d03785074035f5fd1 100644
--- a/chrome/browser/usb/usb_tab_helper.h
+++ b/chrome/browser/usb/usb_tab_helper.h
@@ -18,7 +18,14 @@ class PermissionProvider;
 }
 }
 
-class WebUSBPermissionProvider;
+namespace webusb {
+class WebUsbPermissionBubble;
+}
+
+struct FrameUsbServices;
+
+typedef base::ScopedPtrMap<content::RenderFrameHost*,
+                           scoped_ptr<FrameUsbServices>> FrameUsbServicesMap;
 
 // Per-tab owner of USB services provided to render frames within that tab.
 class UsbTabHelper : public content::WebContentsObserver,
@@ -33,6 +40,10 @@ class UsbTabHelper : public content::WebContentsObserver,
       content::RenderFrameHost* render_frame_host,
       mojo::InterfaceRequest<device::usb::DeviceManager> request);
 
+  void CreatePermissionBubble(
+      content::RenderFrameHost* render_frame_host,
+      mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request);
+
  private:
   explicit UsbTabHelper(content::WebContents* web_contents);
   friend class content::WebContentsUserData<UsbTabHelper>;
@@ -40,12 +51,18 @@ class UsbTabHelper : public content::WebContentsObserver,
   // content::WebContentsObserver overrides:
   void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
 
+  FrameUsbServicesMap::const_iterator GetFrameUsbService(
+      content::RenderFrameHost* render_frame_host);
+
   void GetPermissionProvider(
       content::RenderFrameHost* render_frame_host,
       mojo::InterfaceRequest<device::usb::PermissionProvider> request);
 
-  base::ScopedPtrMap<content::RenderFrameHost*,
-                     scoped_ptr<WebUSBPermissionProvider>> permission_provider_;
+  void GetPermissionBubble(
+      content::RenderFrameHost* render_frame_host,
+      mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request);
+
+  FrameUsbServicesMap frame_usb_services_;
 
   DISALLOW_COPY_AND_ASSIGN(UsbTabHelper);
 };